Thank you Coire. I didn't get to see the 2nd one and the 3rd is still attached although unplugged. The Air Filter is a standard one and is brand new, I've got it booked in for next week at a Renault workshop as I've been told that unplugging the MAF Sensor also disables a couple of other things and it could be one of these things that's actually causing the problem!
"Renault" 3503: Ryšio klaida su ABS "Renault" 3504: Šaltnešio slėgio jutiklio grandinė "Renault" 3505: Kuro sistemos klaida "Renault" 3506: Cilindrų Nr. 1 ir Nr. 4 uždegimo ritės grandinė yra sutrumpinta iki žemės "Renault" 3507: 2 ir 3 cilindrų uždegimo ritinių grandinė yra sutrumpinta iki žemės "Renault" 3508